Electronic telephone system



Dec. 11, 1956 R. e. TRousDALE ErAL 773,934

ELECTRONIC TELEPHONE SYSTEM Filed Dec. 24, 1949 49 sheets-sheet 1 R. B. TRoUsDALE ETAL 2,773,934

ELECTRONIC TELEPHONE SYSTEM 49 Sheets-Sheet 2 Dec. 1l, 1956 Filed Dec. 24, 1949 Dec. ll, 1956 R, B, TROUSDALE ETAL 2,773,934

ELECTRONIC TELEPHONE SYSTEM 49 Sheets-Sheet 3 Filed Dec. 24. 1949 Nw @NJ Dec. l1, 1956 R. B. TRousDALE ETAI- 2,773,934

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ELECTRONIC TELEPHONE SYSTEM Filed Dec. 24,- 1949 49 Sheets-Sheet 8 Dec. l,

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DEC 11; 1956 R. B. TRousDALE ETAL 2,773,934

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